Merge Android R (rvc-dev-plus-aosp-without-vendor@6692709)

Bug: 166295507
Merged-In: I1e54186afca0843a1607b33465c37aece62f4522
Change-Id: I1ae4134b93e99fc56cc0935e0e78df197e0d9487
tree: e67f720984bacb763fa054c650e0163bf695e3e3
  1. com/
  2. Android.bp
  3. import-maven-artifacts.sh